2-Hydroxyimino-1-phenylethanone thiosemicarbazone monohydrate

In the title thio-semicarbazone derivative, C9H10N4OS·H2O, intra-molecular N - H⋯N hydrogen bonds result in the formation of two nearly coplanar five- and six-membered rings, which are also almost coplanar with the adjacent phenyl ring. The oxime group has an E configuration and is involved in inter-molecular O - H⋯O hydrogen bonding as a donor. In the crystal structure, intra-molecular O - H⋯S and N - H⋯N and inter-molecular O - H⋯O and N - H⋯S hydrogen bonds generate edge-fused R 2 ²(8) and R 4 ¹(11) ring motifs. The hydrogen-bonded motifs are linked to each other to form a three-dimensional supra-molecular network.